Description of problem: WARNING: CPU: 2 PID: 1732 at drivers/gpu/drm/i915/i915_gem.c:5269 Version-Release number of selected component (if applicable): 4.2.6-301.fc23.x86_64 on W541 laptop How reproducible: 100% Steps to Reproduce: 1. Check dmesg 2. 3. Actual results: Expected results: Additional info: [ 19.244239] ------------[ cut here ]------------ [ 19.244259] WARNING: CPU: 2 PID: 1732 at drivers/gpu/drm/i915/i915_gem.c:5269 i915_gem_track_fb+0x129/0x140 [i915]() [ 19.244260] WARN_ON(!(old->frontbuffer_bits & frontbuffer_bits)) [ 19.244261] Modules linked in: [ 19.244263] cmac xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun ccm nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ebtable_nat ebtable_filter ebtable_broute bridge stp llc ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_raw ip6table_security ip6table_mangle ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_raw iptable_security iptable_mangle bnep arc4 intel_rapl iosf_mbi x86_pkg_temp_thermal coretemp iTCO_wdt iTCO_vendor_support iwlmvm kvm snd_hda_codec_realtek mac80211 snd_hda_codec_generic snd_hda_codec_hdmi crct10dif_pclmul crc32_pclmul crc32c_intel snd_hda_intel btusb snd_hda_codec btrtl uvcvideo iwlwifi btbcm btintel snd_hda_core bluetooth videobuf2_vmalloc [ 19.244289] snd_hwdep videobuf2_core snd_seq videobuf2_memops v4l2_common snd_seq_device cfg80211 videodev uas joydev usb_storage snd_pcm media mmc_block snd_timer mei_me mei thinkpad_acpi ie31200_edac shpchp edac_core lpc_ich i2c_i801 snd tpm_tis tpm soundcore rfkill nfsd auth_rpcgss nfs_acl lockd grace sunrpc nouveau i915 mxm_wmi ttm i2c_algo_bit drm_kms_helper sdhci_pci e1000e sdhci serio_raw drm mmc_core ptp pps_core wmi video [ 19.244312] CPU: 2 PID: 1732 Comm: gnome-shell Not tainted 4.2.6-301.fc23.x86_64 #1 [ 19.244313] Hardware name: LENOVO 20EGS0R60A/20EGS0R60A, BIOS GNET72WW (2.20 ) 02/26/2015 [ 19.244314] 0000000000000000 00000000ca427173 ffff8804544d3a28 ffffffff817729ea [ 19.244316] 0000000000000000 ffff8804544d3a80 ffff8804544d3a68 ffffffff8109e4b6 [ 19.244318] ffff880465d80000 0000000000000010 ffff880447a19b00 ffff880465f55680 [ 19.244319] Call Trace: [ 19.244324] [<ffffffff817729ea>] dump_stack+0x45/0x57 [ 19.244327] [<ffffffff8109e4b6>] warn_slowpath_common+0x86/0xc0 [ 19.244329] [<ffffffff8109e545>] warn_slowpath_fmt+0x55/0x70 [ 19.244339] [<ffffffffa01d5739>] i915_gem_track_fb+0x129/0x140 [i915] [ 19.244353] [<ffffffffa021c2d7>] intel_prepare_plane_fb+0xe7/0x1a0 [i915] [ 19.244358] [<ffffffffa0152eb9>] drm_atomic_helper_prepare_planes+0x59/0xe0 [drm_kms_helper] [ 19.244370] [<ffffffffa021461e>] __intel_set_mode+0x1ae/0xb60 [i915] [ 19.244381] [<ffffffffa02162df>] ? intel_modeset_compute_config+0x3af/0xb60 [i915] [ 19.244391] [<ffffffffa021bc86>] intel_crtc_set_config+0x2b6/0x580 [i915] [ 19.244401] [<ffffffffa0072306>] drm_mode_set_config_internal+0x66/0x100 [drm] [ 19.244409] [<ffffffffa0076819>] drm_mode_setcrtc+0x3e9/0x500 [drm] [ 19.244414] [<ffffffffa0067365>] drm_ioctl+0x125/0x610 [drm] [ 19.244421] [<ffffffffa0076430>] ? drm_mode_setplane+0x1b0/0x1b0 [drm] [ 19.244423] [<ffffffff81231445>] do_vfs_ioctl+0x295/0x470 [ 19.244426] [<ffffffff813294dd>] ? selinux_file_ioctl+0x4d/0xc0 [ 19.244427] [<ffffffff81231699>] SyS_ioctl+0x79/0x90 [ 19.244430] [<ffffffff817793ee>] entry_SYSCALL_64_fastpath+0x12/0x71 [ 19.244431] ---[ end trace 63c945e46d0f133c ]---
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